VM HA vs. Application HA: Choose Your Redundancy Level with SafeKit

VM HA with the SafeKit Hyper-V or KVM module	Application HA with SafeKit application modules
SafeKit inside 2 hypervisors SafeKit replication and failover of full VM	SafeKit inside 2 virtual or physical machines SafeKit replication and failover at application level
Replicates more data (App+OS)	Replicates only application data
Reboot of VM on hypervisor 2 if hypervisor 1 crashes Recovery time = time to reboot the VM Failover if a VM crashes	Quick recovery time with restart of App on OS2 if crash of server 1 Around 1 mn or less (see RTO/RPO here) Advanced application checker and software failover
Define the location of the VM files folder where the application is installed. Generic solution for any application / OS	Define services to restart, application folders to replicate, a virtual IP address for failover inside an application module
The solution works with Hyper-V and KVM but not with VMware (except by nesting Hyper-V or KVM inside VMware)	The solution works in any infrastructure (physical servers, VMware Hyper-V KVM virtual machines, cloud...)

SafeKit with the Hyper-V module or the KVM module	Microsoft Hyper-V Cluster & VMware HA

No shared disk - synchronous real-time replication instead with no data loss	Shared disk and specific extenal bay of disk
Remote sites = no SAN for replication	Remote sites = replicated bays of disk across a SAN or vSAN
No specific IT skill to configure the system Failover if the VM crashes	Specific IT skills to configure the system

🔍 SafeKit High Availability Navigation Hub

Explore SafeKit: Features, technical videos, documentation, and free trial
Resource Type	Description	Direct Link
Key Features	Why Choose SafeKit for Simple and Cost-Effective High Availability?	See Why Choose SafeKit for High Availability
Use Cases	Explore How SafeKit Ensures the High Availability of Critical Infrastructure	See All Use Cases (OEM Software, Edge Servers, SCADA, and more)
Deployment Model	All-in-One SANless HA: Shared-Nothing Software Clustering	See SafeKit All-in-One SANless HA
HA Strategies	SafeKit: Infrastructure (VM) vs. Application-Level High Availability	See SafeKit HA & Redundancy: VM vs. Application Level
Technical Specifications	Technical Limitations for SafeKit Clustering	See SafeKit High Availability Limitations
Proof of Concept	SafeKit: High Availability Configuration & Failover Demos	See SafeKit Failover Tutorials
Architecture	How the SafeKit Mirror Cluster works (Real-Time Replication & Failover)	See SafeKit Mirror Cluster: Real-Time Replication & Failover
Architecture	How the SafeKit Farm Cluster works (Network Load Balancing & Failover)	See SafeKit Farm Cluster: Network Load Balancing & Failover
Competitive Advantages	Comparison: SafeKit vs. Traditional High Availability (HA) Clusters	See SafeKit vs. Traditional HA Cluster Comparison
Technical Resources	SafeKit High Availability: Documentation, Downloads & Trial	See SafeKit HA Free Trial & Technical Documentation
Pre-configured Solutions	SafeKit Application Module Library: Ready-to-Use HA Solutions	See SafeKit High Availability Application Modules